Trocar



FIG. 1 is a perspective view of a trocar;

FIG. 2 is a first side view thereof;

FIG. 3 is a second side view thereof;

FIG. 4 is a third side view thereof;

FIG. 5 is a fourth side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in the drawings represent portions of the trocar that form no part of the claimed design. 

CLAIM The ornamental design for a trocar, as shown and described. 